diff --git a/src/db/sqlite/headers.rs b/src/db/sqlite/headers.rs
index 9545f87..0d754d4 100644
--- a/src/db/sqlite/headers.rs
+++ b/src/db/sqlite/headers.rs
@@ -160,9 +160,9 @@ impl SqliteHeaderDb {
         Ok(headers)
     }
 
-    async fn write<'a>(
+    async fn write(
         &mut self,
-        header_chain: &'a BTreeMap<u32, Header>,
+        header_chain: &BTreeMap<u32, Header>,
     ) -> Result<(), SqlHeaderStoreError> {
         let mut write_lock = self.conn.lock().await;
         let tx = write_lock.transaction()?;
@@ -197,9 +197,9 @@ impl SqliteHeaderDb {
         Ok(())
     }
 
-    async fn write_over<'a>(
+    async fn write_over(
         &mut self,
-        header_chain: &'a BTreeMap<u32, Header>,
+        header_chain: &BTreeMap<u32, Header>,
         height: u32,
     ) -> Result<(), SqlHeaderStoreError> {
         let mut write_lock = self.conn.lock().await;
@@ -233,9 +233,9 @@ impl SqliteHeaderDb {
         Ok(())
     }
 
-    async fn height_of<'a>(
+    async fn height_of(
         &mut self,
-        block_hash: &'a BlockHash,
+        block_hash: &BlockHash,
     ) -> Result<Option<u32>, SqlHeaderStoreError> {
         let write_lock = self.conn.lock().await;
         let stmt = "SELECT height FROM headers WHERE block_hash = ?1";
diff --git a/src/network/dns.rs b/src/network/dns.rs
index afc6188..2a57526 100644
--- a/src/network/dns.rs
+++ b/src/network/dns.rs
@@ -64,7 +64,7 @@ pub(crate) struct Dns<'a> {
     seeds: Vec<&'a str>,
 }
 
-impl<'a> Dns<'a> {
+impl Dns<'_> {
     #[cfg(feature = "dns")]
     pub fn new(network: Network) -> Self {
         let seeds = match network {